168 results about "Hydrogenation process" patented technology

The application provides a continuous hydrogenation-isomerization method capable of meeting the treatment requirements of biological oils, especially waste oils, using a homogeneous hydrogenation process with strong adaptability to raw materials as a raw material pretreatment process, and matching a high-activity nanometer transition metal sulfide catalyst. On this basis, a catalytic distillation process is used for selective cracking of long-chain alkanes to improve the yield of medium and long-chain alkanes; an ultramicro flow hydrogen gas mixer and a reduced non-noble metal hydrogenation-isomerization catalyst are used to reduce the hydrogen / oil ratio and the energy consumption of the circulating hydrogen system, and to reduce the production cost of the catalyst, so as to finally realize efficient and low-carbon conversion of waste oils, and low-cost and high-selectivity preparation of biological aviation kerosene.

The invention discloses a high-silicon crude benzene hydrogenation process which comprises the following steps: firstly, separating a raw material crude benzene into a crude benzene component I and a crude benzene component II, sequentially carrying out first-stage hydrogenation on the crude benzene component I to remove unsaturated substances such as styrene and diolefin, and carrying out second-stage hydrogenation on the crude benzene component I to remove silicon-containing compounds and residual unsaturated substances such as styrene and diolefin; and mixing with a crude benzene component II, and carrying out third-stage hydrogenation to remove impurities such as sulfur, nitrogen and the like. According to the distribution of the content of styrene and silicon in the crude benzene, styrene and silicon in the crude benzene are enriched in the crude benzene component I through distillation separation, and the crude benzene component II is removed, so that the hydrogenation styrene removal and hydrogenation desilicication reactions of the crude benzene component I are easier to carry out, meanwhile, the removal of silicon-containing compounds is further promoted through the addition of ethylenediamine, and the yield of the crude benzene is improved. The desiliconization activity and precision of second-stage hydrogenation are improved, and the problem of rapid deactivation of the catalyst caused by silicon poisoning in high-silicon crude benzene hydrogenation is effectively solved.

The invention discloses a hydrogenation catalyst as well as a preparation method and application thereof. The hydrogenation catalyst comprises a carrier and active metal, the carrier is an aluminum oxide core wrapped by a carbon shell, the active metal is Mo and Ni, and on the basis of the weight of the catalyst, the content of MoO3 is 7.5 wt%-15.5 wt%, the content of NiO is 1.5 wt%-4.5 wt%, the content of carbon is 20 wt%-45 wt%, and the content of aluminum oxide is 35 wt%-70 wt%; and the ratio delta 1 of the content of the active metal in the shell layer to the content of the active metal in the core layer is 0.25: 1-0.75: 1. The preparation method comprises the following steps: (1) preparing active metal modified flour; (2) preparing active metal modified pseudo-boehmite microspheres; and (3) rolling the active metal modified flour and the active metal modified pseudo-boehmite microspheres for molding, then carrying out heat treatment, drying and roasting to obtain the hydrogenation catalyst. The catalyst disclosed by the invention has relatively high metal impurity capacity and relatively high Ca, Fe, Ni and V removal capacity, and is suitable for being used as a hydrogenation protection catalyst and a hydrodemetallization catalyst in a residual oil hydrogenation process.

The utility model belongs to the technical field of coal tar hydrogenation process, and relates to a sealing gas conveying system for sealing a circulating hydrogen compressor, which comprises a conveying pipeline and heating equipment, the conveying pipeline is connected with the outlet end of the compressor and used for conveying sealing gas. The heating device is arranged on the conveying pipeline and used for heating the sealing gas. According to the utility model, the process gas at the outlet end of the compressor is heated through the additionally arranged heating equipment, so that the process gas can be conveniently heated to the required temperature to serve as sealing gas, the load of the compressor does not need to be increased, unnecessary energy consumption of the compressor is avoided, and in addition, in the actual operation process, the energy consumption is reduced. The load of the compressor can be reduced according to actual process requirements, so that the process gas temperature at the outlet end of the compressor is reduced, and energy conservation and consumption reduction of the compressor are realized.

The present application relates to the technical fields of chemical synthesis, and discloses a kind of aviation kerosene production process and equipment, production process includes: carbon source gas, hydrogen, circulating gas is sent into main reactor reaction and obtains including hydrocarbon, methanol, CO, water and unreacted gas mixed component a;Mixed component a is sent into cascade reactor and is prepared to obtain including aviation kerosene component, light hydrocarbon component and water mixed component b, wherein light hydrocarbon component includes one or more of C2-C7 light hydrocarbon;Mixed component b is fractionally condensed to collect liquid phase and gas phase, and liquid phase is carried out three-phase separation to obtain aviation kerosene component, light hydrocarbon component and water respectively, aviation kerosene component is hydrotreated, fractionation to obtain aviation kerosene.The present application realizes the step-by-step control of reaction path in carbon source hydrogenation process through the synergistic effect of main reactor and cascade reactor, improves the selectivity of aviation kerosene target product, so that the obtained product meets the 3# aviation kerosene standard requirements in key indicators such as distillation range distribution, aromatic content and low temperature performance.

According to the multi-construction layered metal oxide and the application thereof in hydro-conversion of the polystyrene waste plastic pyrolytic oil, the prepared multi-construction layered metal oxide serves as a catalyst and is fully mixed with the polystyrene waste plastic pyrolytic oil after being pretreated, and then the mixture is transferred into a reaction kettle; after sealing, filling hydrogen into the reaction kettle, controlling the reaction temperature to be 90-100 DEG C, and stirring to react for 6-12 hours; according to the invention, the multi-constructed NixAl-LDO is combined with the hydrogenation process, and the styrene conversion rate and ethylbenzene selectivity are improved by utilizing the combined action of the structural advantage of the multi-layer catalyst and the hydrogenation reaction.

This invention discloses a method for preparing ultra-high voltage converter transformer oil. The method uses the full fraction of high-temperature and medium-low temperature coal tar as raw material, employing a combined suspended-bed hydrogenation process. Through the same raw material and a single set of industrial equipment, continuous production of transformer oil base oil and aromatic oil is achieved. After the final addition of an antioxidant, the resulting transformer oil exhibits excellent anti-gas evolution properties, and its low-temperature performance and antioxidant properties are significantly superior to commercially available transformer oils. Furthermore, the method demonstrates strong adaptability to raw materials, flexible operation, and online catalyst addition in small quantities, resulting in improved overall performance of the prepared ultra-high voltage converter transformer oil. This invention provides an economical processing method for coal tar, which has relatively low byproduct utilization, and also develops a new raw material for the production of ultra-high voltage converter transformer oil.

The invention discloses a biomass sugar solution steam stripping-hydrogenation device and a biomass sugar hydrogenation process, the biomass sugar solution steam stripping-hydrogenation device comprises: a steam stripping reaction kettle, the top of the steam stripping reaction kettle is provided with a feed pipe, and the bottom of the steam stripping reaction kettle is provided with a hydrogen inlet pipe; the fixed bed hydrogenation reactor is communicated with the steam stripping reaction kettle; the cooler is communicated with the fixed bed hydrogenation reactor; and the gas-liquid separator is communicated with the cooler. According to the present invention, the steam stripping-hydrogenation process coupling is adopted to achieve the in-situ conversion of the heat sensitive saccharide derivative, the problems of difficult separation, easy heating coking and the like of the saccharide derivative are solved, and the hydrogen circulation, the heat coupling and the integration of the process process are provided to provide the continuous, high-selectivity and low-energy-efficiency new process for preparing the biomass energy and the chemical product.

The invention discloses a hydrogenation catalyst as well as a preparation method and application thereof. The hydrogenation catalyst comprises a carrier and active metal components, the carrier is a core-shell carrier, a core layer is alumina, a shell layer is alumina containing molybdenum carbide, and the active metal components comprise at least one of VIII group metal oxides and at least one of VIB group metal oxides. The catalyst can be used for hydrogenation of heavy oil, residual oil and the like, is especially suitable for a residual oil hydrogenation process, and realizes efficient hydrogenation.

This invention discloses a method for hydrotreating catalytic cracking slurry. A fixed-bed hydrotreating process is employed, comprising: in the presence of hydrogen, the catalytic cracking slurry sequentially contacts a hydrotreating protectant, a hydrotreating transition catalyst, and a hydrodesulfurization catalyst to undergo a hydrotreating reaction, yielding hydrotreated oil. The hydrotreating protectant comprises an alumina support with a most probable pore size of 40–100 nm, molybdenum oxide, and cobalt oxide. The hydrotreating transition catalyst comprises an alumina support containing additives and MoO3 and CoO. The support has a bimodal pore size distribution, with smaller pores concentrated in the 10–40 nm range and larger pores concentrated in the 150–400 nm range. This method eliminates the diffusion resistance during the adsorption and reaction of large molecules on the catalyst surface during the hydrotreating of catalytic cracking slurry, increases the capacity for more deposits such as coke, extends the operating cycle of the unit, and facilitates hydrodesulfurization and other reactions. It also increases the content of tricyclic and tetracyclic aromatics in the hydrotreated oil, making it a high-quality feedstock for needle coke production.

This invention relates to the field of rubber hydrogenation, and discloses a stirred tank reactor and its application in rubber hydrogenation, as well as a batch hydrogenation method for nitrile rubber. The stirred tank reactor includes a cylindrical body and a stirrer and hollow finger-shaped baffles placed inside the body. The stirrer includes a hollow stirring shaft and a stirring paddle mounted on the shaft. A hydrogen inlet is located at the top of the hollow stirring shaft, and an annular gas distributor is located at the bottom. The hollow finger-shaped baffles include a hollow straight tube and at least two short, downward-sloping straight tubes arranged along the bottom of the tube. The bottom of the hollow straight tube is connected to a hydrogen inlet pipe at the bottom of the cylindrical body. The multiple hollow finger-shaped baffles within the stirred tank reactor enable good dispersion and mixing of hydrogen in the rubber solution, and, together with the hollow stirring shaft and gas distributor, achieve a top-to-bottom self-circulation of hydrogen in the gas phase space within the reactor, thereby improving the hydrogenation efficiency of the rubber hydrogenation reaction.

The application provides a continuous palladium-carbon hydrogenation reaction method, which is carried out according to the following steps: step one, mixing carbon catalyst with a solvent, and then injecting into the inside of a reactor; step two, connecting and starting a circulating pump to make the inside catalyst partially flow in a circulating mode; step three, injecting p-nitrotoluene and hydrogen, and carrying out heat exchange treatment on the whole reactor through a heat exchanger to keep the temperature stable during the reaction; and step four, discharging the reaction liquid and carrying out filtration treatment. The continuous palladium-carbon hydrogenation reaction method and equipment optimize the catalytic effect of the catalyst, improve the filtration efficiency, ensure that the raw material liquid and hydrogen enter the reactor, make the catalyst freely flow in the whole reaction area without being discharged from the reactor, continuously remove the product from the reactor, keep the temperature stable during the whole reaction process through the heat exchanger, and automatically stir the inside through the hydrogen injection.

This invention relates to the field of methanol production technology. It discloses a methanol production method and system based on ethanol production off-gas, comprising: Step S1: Off-gas from the ethanol carbonylation process is fed to the methanol washing process to obtain CO supplementary washing gas; Step S2: Off-gas from the ethanol hydrogenation process is fed to the methanol washing process to obtain H2 supplementary washing gas; Step S3: CO supplementary washing gas and H2 supplementary washing gas are mixed and fed, and the hydrogen-to-carbon ratio in the mixed washing gas is controlled between 1.8 and 1.9 by gas collection and detection combined with diversion flow control. Ethanol off-gas is used as the main supplementary gas for methanol production feedstock. The combination of off-gas from the ethanol carbonylation process and off-gas from the ethanol hydrogenation process forms a hydrogen-to-carbon ratio closer to that of methanol feedstock gas. After methanol washing, a feedstock gas containing mainly CO and H2, with a small amount of CO2 as a secondary component, is formed, making the methanol system more stable.

The utility model relates to the technical field of polycrystalline silicon production, and provides a quench tower and a cold hydrogenation process treatment system. The quench tower comprises a tower body and is provided with an air inlet, and the air inlet is close to the tower bottom of the tower body. And the N tower trays are arranged in the tower body and are positioned above the air inlet, and a plurality of air holes are distributed on the tower trays. And the tower trays are sequentially arranged from low to high along the height direction of the tower body. When the number n tower tray is smaller than or equal to m, the apertures of the air holes in the tower trays from low to high are sequentially reduced along the height direction of the tower body; when the number n tower tray is greater than or equal to m, the hole diameters of the air holes in the tower trays are equal; wherein N and m are any positive integers greater than 3. By setting the aperture of the air hole, the step-by-step separation of solid impurities carried in the gas can be realized, so that the fault-tolerant rate of the operation adjustment of the quench tower is increased and the operation stability is improved while the blockage probability of the tray of the quench tower is reduced.

The invention discloses a preparation method of a gasoline selective hydrogenation catalyst, which comprises the following steps: (1) adding a niobium-containing precursor into bottom water of a reactor, adding an aluminum salt solution and a precipitant in a parallel flow manner, carrying out gelling reaction, pulping molybdenum trioxide after gelling, carrying out aging reaction, and washing, filtering and drying an aging product to obtain modified alumina dry glue powder; (2) uniformly mixing the modified alumina dry glue powder, a peptizing agent and an extrusion aid, carrying out extrusion molding, drying and roasting to obtain a carrier, and carrying out vulcanization treatment; (3) carrying out saturated impregnation on the carrier vulcanized in the step (2) by using liquid olefin, and then carrying out closed heat treatment under a CO2 atmosphere condition with a certain concentration; and (4) impregnating the heat-treated material obtained in the step (3) with an impregnation liquid containing active metal Co, drying, roasting and vulcanizing to obtain the hydrodesulfurization catalyst. The catalyst disclosed by the invention has relatively high desulfurization activity and selectivity when being applied to a gasoline selective hydrogenation process.

The invention discloses a polymer hydrogenation method, a catalyst and a preparation method of the catalyst. The hydrogenation method of the polymer comprises the following steps: carrying out hydrogenation reaction on the polymer and hydrogen under the action of a catalyst, the catalyst comprises Ni and a first non-metallic element; and the catalyst particles have nano-particle sizes. In the polymer hydrogenation method, the catalyst is high in activity, long in service life and low in polymer chain scission rate.

The application discloses a hydrogen production and hydrogenation integrated station control method, which comprises hydrogen production equipment, a hydrogen buffer tank, a first-stage compressor, a first-stage hydrogen storage tank, a second-stage compressor, a second-stage hydrogen storage tank and hydrogenation equipment which are sequentially connected; during hydrogenation, the hydrogen production equipment, the first-stage compressor, the second-stage compressor and the hydrogenation equipment are controlled to work according to the relationship between the pressures of the hydrogen buffer tank, the first-stage hydrogen storage tank, the second-stage hydrogen storage tank and the hydrogenation equipment when the hydrogenation equipment works and the maximum filling pressure allowed for the hydrogenation equipment, the first preset pressure, the second preset pressure, the maximum allowable working pressure of the second-stage hydrogen storage tank, the fourth preset pressure, the minimum inlet air pressure of the first-stage compressor, the maximum allowable working pressure of the first-stage hydrogen storage tank, the third preset pressure, the maximum allowable working pressure of the hydrogen buffer tank and the minimum inlet air pressure of the second-stage compressor. The application realizes on-demand start and stop of hydrogen production, reduces loss, prolongs the service life of equipment, reduces cost and production hidden danger.

The invention discloses a filling method for retarding coking of a hydrogenation catalyst and reducing basic pressure difference of a reactor, which comprises the following steps: an inert material is selected according to the size and bulk density of the hydrogenation catalyst, and the inert material comprises at least one of a Raschig ring, a Pall ring and an inert ceramic ball; calculating the ratio of the inert material to the hydrogenation catalyst, and mixing the inert material with the hydrogenation catalyst according to the ratio; and filling the mixed catalyst mixture into a tube nest. The inert material is used for diluting the active center of the catalyst, dispersing reaction heat and reducing the accumulation of heat at the upper part of the tube nest, so that the reaction intensity is actively reduced, the coking speed is directly slowed down, the basic pressure difference of the reactor is reduced, and the problems that the catalyst is easy to coke and the bed resistance is increased in the process of preparing ethylene glycol by hydrogenation of dimethyl oxalate are effectively solved; reaction conditions are optimized from a filling source, and the service life of the catalyst is prolonged.

This invention discloses a method for hydroconversion of catalytic cracking diesel, the method comprising the following steps: (1) catalytic cracking diesel is fractionated to obtain light fraction and heavy fraction of catalytic cracking diesel; (2) the heavy fraction of catalytic cracking diesel first enters the hydrorefining reaction zone and is contacted with the hydrorefining catalyst in the presence of hydrogen to carry out the hydrorefining reaction. When the bed temperature of the hydrorefining reaction zone increases by 40°C to 100°C compared with the inlet temperature of the hydrorefining reaction zone, the light fraction of catalytic cracking diesel is introduced and mixed with the heavy fraction of catalytic cracking diesel after the hydrorefining reaction to continue the hydrorefining reaction; (3) the stream after the hydrorefining reaction in step (2) enters the hydrocracking reaction zone and is contacted with the hydrocracking catalyst to carry out the hydrocracking reaction; (4) the stream obtained in step (3) is separated to obtain light naphtha, heavy naphtha and tail oil. The heavy naphtha is extracted with aromatics to obtain BTX. The method can effectively reduce the loss of aromatics in catalytic cracked diesel during the hydrogenation process and increase the content of BTX components in the hydrogenation products.

The application relates to the technical field of magnetocaloric materials, and discloses a low-curie-temperature iron-based magnetocaloric material, a preparation method, a deicing agent and a coating. The magnetocaloric material takes iron as the main body, introduces rare earth elements, transition group elements and metalloid elements to form a synergistic component system, and has the characteristics of adjustable curie temperature and high saturation magnetic induction intensity. The preparation method comprises the following steps: alloy smelting and high-temperature homogenization heat treatment, block pretreatment, segmented parameter control hydrogen crushing, and gradient temperature rising high-vacuum dehydrogenation. Through the hydrogenation process combining low-temperature permeation, high-pressure crushing and heat preservation and refinement, the uniform and controllable crushing of the alloy is realized, and the residual hydrogen content is effectively reduced in the multi-stage dehydrogenation process. The application can significantly improve the problems of serious oxidation, uneven particle size and magnetic performance attenuation existing in the traditional mechanical crushing or conventional hydrogen crushing process. The obtained magnetocaloric material shows high saturation magnetic induction intensity and stable magnetocaloric performance in the low curie temperature interval.

The invention discloses a fluidized bed residual oil hydrogenation catalyst grading method and application thereof. According to the grading method, a core-shell hydrogenation catalyst is adopted, the average pore size of an upstream catalyst core layer is larger than that of an adjacent downstream catalyst core layer in the material flow direction, and the average pore size of an upstream catalyst is larger than that of an adjacent downstream catalyst. By adopting the grading method disclosed by the invention, the stability of a residual oil system can be maintained in hydro-conversion, the generation amount of sediments in a product is reduced, and stable operation of a boiling bed residual oil hydrogenation process is realized.

The present application relates to a kind of raw material benzene p-nitrobenzene hydrogenation catalyst influence evaluation method, comprising the following steps: raw material benzene is purchased, and heavy component monitoring index is increased, and heavy component is directly used in nitration and hydrogenation process when lower than certain content;Heavy component is higher than certain content, and raw material benzene needs to be concentrated, and the influence on hydrogenation catalyst activity is evaluated, and raw material benzene use and processing scheme are formulated according to the evaluation result.The present application also relates to a kind of aniline production method.The present application can effectively prevent the material of entraining toxic catalyst in raw material benzene, along with nitrobenzene into hydrogenation reactor, effectively avoid catalyst activity reduction, cause hydrogenation reaction parameter to fluctuate sharply, and then lead to catalyst consumption sharp increase, when serious, can cause system catalyst overall deactivation, improve the stability of production process.

The invention discloses a Pd cluster modified In2O3 composite material and a preparation method and application thereof, and belongs to the technical field of electrocatalysts and electrochemical environmental governance, the Pd cluster modified In2O3 composite material is marked as Pd (at) In2O3, a metal organic framework material MIL-68 (In) is used as a precursor, a Pd (at) In2O3 precursor is obtained through in-situ impregnation reduction, and then the Pd (at) In2O3 precursor is subjected to high-temperature calcination to prepare the Pd cluster modified In2O3 composite material. According to the Pd cluster modified In2O3 composite material as well as the preparation method and the application thereof, the prepared Pd-coated In2O3 has bifunctional active sites through material design and structure regulation and control, so that the synergistic promotion of nitrate activation and hydrogenation processes in an electro-catalysis nitrate reduction reaction is realized; the catalyst shows excellent catalytic activity and stability in electrocatalytic nitrate reduction synthesis of ammonia, and has a good application prospect.

The present application relates to a kind of hydrogenation process fuel cell vehicle control method and system, belong to new energy technology field.Add hydrogen judgment logic is through the hydrogen pressure periodically collected by hydrogen system, the pressure rise rate in specific time period is calculated, and the residual hydrogen mass rise rate is calculated according to temperature and pressure by gas state equation, simultaneously satisfy the condition of exceeding pressure rise rate threshold and residual hydrogen mass rise rate threshold, and vehicle is at safe speed, judge vehicle is in hydrogenation state, and vehicle control is cut off high voltage electricity.Avoid setting independent sensor switch in hydrogenation hatch, reduce cost, while it can avoid the unexpected parking safety risk caused by hydrogenation hatch abnormal opening under the harsh operating condition of fuel cell heavy truck.

The application provides a catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: first, a pore size adjustment treatment is performed on a spherical full-silicon molecular sieve carrier to obtain carriers with different pore size distributions; then, a CVD reaction is performed by using N2 to carry steam of molten Ni salt, Cr salt and Fe salt into a quartz tube filled with the dried carriers; then, the molecular sieve spheres after the reaction are calcined in N2 to obtain Ni-Cr-FeO x @Si-molecular sieve; and then, H2 or CO is used for reduction to obtain a Ni-Cr-Fe@Si-molecular sieve catalyst. The catalysts with different pore sizes are mixed in a specific proportion and then applied to a BYD fixed-bed hydrogenation process for preparing BDO, and the hydrogenation activity and product selectivity are high, the selectivity for BDO can reach > 99%, the amount of butanol generated is < 0.9%, and the amount of TBA generated is < 0.1%.

A semi-hydrogenated bio-based terpene and conjugated diene multivariate random copolymer elastomer and its preparation method and application. The present application belongs to the field of olefin catalytic polymerization and hydrogenation. The purpose of the present application is to solve the technical problem that the existing hydrogenated rubber material generally does not have good skid resistance and mechanical properties. The elastomer of the present application is copolymerized and hydrogenated by at least one of the conjugated diene monomers and at least one of the bio-based terpene monomers, and the hydrogenation degree is 40-55%. The present application copolymerizes bio-based terpene and conjugated diene monomers, then hydrogenates them, controls the hydrogenation process, and finally obtains a bio-based semi-hydrogenated elastomer with only half the hydrogenation degree. Because this elastomer has a longer side chain and only half the hydrogenation degree, it has all the properties of elastomers and plastics. This elastomer has excellent mechanical properties, weather resistance and skid resistance, the overall preparation process is simple and the yield is high, and it is extremely suitable for industrial production.

The application relates to the technical field of organic synthesis, and discloses a method and system for preparing p-phenylenediamine antidegradants. The method comprises the following steps: (1) performing a dehydration condensation reaction on RT pesi and acetone in the presence of molecular sieves to obtain a first mixed solution containing a Schiff base; (2) performing a hydrogenation reaction on the first mixed solution containing the Schiff base in the presence of a hydrogenation catalyst to obtain a second mixed solution; and (3) performing separation crystallization on the second mixed solution to obtain an antidegradant 4010NA and an antidegradant 6PPD. The method and system can coproduce the antidegradants 4010NA and 6PPD, the proportion of 4010NA and 6PPD in the products can be flexibly controlled within a certain range compared with a one-step condensation hydrogenation process, the proportion of 6PPD in the products is increased, and the prepared antidegradant products are high in purity.

The invention discloses a preparation method of a gasoline selective hydrogenation catalyst, which comprises the following steps: (1) impregnating a carrier with an impregnation liquid containing active metals Mo and Co, and drying to obtain a first-stage hydrodesulfurization catalyst; (2) impregnating the first-stage hydrodesulfurization catalyst obtained in the step (1) with an impregnation liquid containing alkali metal and / or alkaline earth metal, and drying to obtain a second-stage hydrodesulfurization catalyst; and (3) roasting the second-stage hydrodesulfurization catalyst obtained in the step (2) under a CO and / or CO2 atmosphere condition with a certain concentration to obtain a finished product catalyst. The catalyst prepared by the method disclosed by the invention well inhibits an olefin saturation active center, is smaller in octane number loss when being applied to a gasoline selective hydrogenation process, and has higher desulfurization activity and selectivity.

The invention relates to a continuous liquid-phase hydrogenation method, which comprises the following steps: mixing raw oil with first hydrogen, and carrying out first hydrogenation reaction to obtain a first hydrogenation product; carrying out first gas-liquid separation on the first hydrogenation product, and collecting a first liquid-phase product; mixing the first liquid phase product with second hydrogen, and carrying out a second hydrogenation reaction to obtain a second hydrogenation product; wherein the usage amount of the first hydrogen and / or the second hydrogen is determined according to the property parameters of the raw oil, and the property parameters comprise theoretical chemical hydrogen consumption and / or sulfur content. According to the present invention, the raw material oil is subjected to the first hydrogenation reaction and the second hydrogenation reaction sequentially, and the hydrogen consumption of the two-stage reaction is determined according to the property parameters of the raw material oil, such that the deep removal of the sulfide can be achieved, the obtained hydrogenation product has the excellent quality, and the economic benefits of the continuous liquid phase hydrogenation process are substantially improved.